Mathematics - 7 October 2007

in a question such as;

f(x)=4x² +12x + c
where c is a constant

could f(x) be the same thing as y?
i know that f(x) stands for the value of the function of f at x but i don't know waht that means.
would it still work if i just made it y=4x² +12x + c?
it would make things much easier

2007-10-07 06:48:31 · 6 answers · asked by fangs*and*venom 2

x,y,z are complex numbers and theyr mudulus are equal(the three between them...they're equal) and x*y*z=x*y + x*z +y*z=1
Calc. or determine x+y+z=?...
I apreciate any ideas...

2007-10-07 06:41:24 · 1 answers · asked by Ana 3

please help

2007-10-07 06:39:55 · 2 answers · asked by Anonymous

Here is problem statement

http://i218.photobucket.com/albums/cc298/curseofgoldendragon/comp.jpg

please use browsers zoom to see it clearly.

Here is an Analysis for the above problem.
http://s218.photobucket.com/albums/cc298/curseofgoldendragon/?action=view¤t=result.jpg

I could not understand the red marked part of the analysis.
Initially , they used the conditions from the second "Further" block.

and then they used the conditions from the first "Further" block.

I dont understand the red marked part of the analysis....i made a red mark there.

why they are saying ,"...Now from the above result , C must be a construction company,D must be an automobole company ...."

why they used the word "MUST" ???

as we know C,H,I,L are Construction company , so evidently C is a construction company.........i dont understand why they are specifically targetting C and telling its a "must" construction company ? whats the fuss here ?

2007-10-07 06:38:10 · 1 answers · asked by calculus 1

factor completely. algebra help

2007-10-07 06:28:34 · 3 answers · asked by Anonymous

What are the intervals in which the function F(x)= tan2x is continuous?
I really want to say continuous at every interval because in my book it says that trig functions are continuous on every point in their domain, but i'm not sure.

My textbook is Calculus of a single variable, seventh addition.

2007-10-07 06:25:42 · 1 answers · asked by Anonymous

but I am having a hard time keeping them separate.

2007-10-07 06:18:02 · 2 answers · asked by Jen 4

Find the critical value for a two tailed test with alpha = 0.10. This is for a normal distribution. (find the z values)

2007-10-07 06:17:27 · 2 answers · asked by fijiangel15 1

So here's the problem... and at the end i have to make a spreadsheet including the data...

Two people have a bank acount for thirty years

Mari- Starts at the 0 mark putting in $1000 per year at 6% annual interest rate for 10 years, then stops putting in money, letting it sit for 20 years.

Phranc- Waits 10 years then puts in 1000 per year at 6% interest every year for 20 years.

What would the equations be to figure the problems out?
I know the A=P(1+r)^t equation, but with all of the variables...
How do i figure it out!


Please help!

2007-10-07 06:15:02 · 1 answers · asked by Anonymous

units?

2007-10-07 06:12:49 · 6 answers · asked by Jen 4

I don't understand this problem.

2007-10-07 06:08:34 · 4 answers · asked by Anonymous

(y^6/z^6)^9

and also
(m^6)^9

2007-10-07 06:08:05 · 4 answers · asked by pualla walla 1

This is a review question for a test I'm taking on Wed. and I have been trying to figure it out and no one can help me..if you can help me please go through it like It's the first time I'm learning it cuz I really don't know how to do this, so the more work shown the better...thank you so much!!!!!!

2007-10-07 06:07:31 · 2 answers · asked by foodidolrent3loves 1

2007-10-07 06:04:44 · 3 answers · asked by crystal_clear_girl238 1

slant height is? I came up with 120S.

I figured the area is 100 and the perimeter is 40. I plugged it all in and came up with this number.

2007-10-07 05:56:43 · 2 answers · asked by Jen 4

2007-10-07 05:54:54 · 5 answers · asked by crystal_clear_girl238 1

I am checking a freinds homework and cant remember how to do these.
1.Solve: (5x/4)-(5x/7)=(5/28)

2.Solve for y. x + 3y = 9

2007-10-07 05:53:44 · 4 answers · asked by Anonymous

Can't get started on this one. Any help would be greatly appreciated. Many thanks!

2007-10-07 05:50:26 · 2 answers · asked by Anonymous

I am suppose to answer this true or false and I say it is false. Pyramids and prisms are totally different from each other structure wise. Right?

2007-10-07 05:45:05 · 2 answers · asked by Jen 4

I answered the first part, but I wanted to get you guys' opinion to see if it was correct, and to also show me the answer to the second question. Thank you all!
Here is a link to the questions:
http://www.flickr.com/photo_zoom.gne?id=1506235511&context=photostream&size=o

2007-10-07 05:37:20 · 2 answers · asked by finitemathkid 1

2007-10-07 05:35:57 · 4 answers · asked by . 1

The simple interest formula: P = A / 1+rt ; for r

2007-10-07 05:30:11 · 2 answers · asked by . 1

Here is the problem.

8d - ( - 7c - 2d ) = ( 8d - (- 2d ) ) - ( - 7c )

= 8d + 2d - ( -7c )

= 10d - ( - 7c )

= 10d + 7c

Did I work this correctly? I am not sure if I worked the sign changes the right way. Any input would be appreciated.

2007-10-07 05:14:34 · 7 answers · asked by Worldly scholar 1

I am having trouble understanding how to set up a specific problem. Here it is:

"You drove 56 miles one way on a service call. On the return trip, your average speed was 8 miles per hour greater and the trip took 10 fewer minutes. What was your average speed on the return trip?"

Thanks!

2007-10-07 05:11:53 · 3 answers · asked by lax21222 1

Solve by using the quadratic formula. 5x^2 – 3x = 1

2007-10-07 05:07:15 · 3 answers · asked by trevor s 2

If p and q are two prime numbers and p>q>3 . Prove that the sum p+q is divisible by 12.

The previous has a typo. Sorry because I do not know how to reedit the question so I ve got to post it again.

2007-10-07 05:05:00 · 3 answers · asked by thlee 2

twice the shorter base, then the area of the trapezoid is 2n?

2007-10-07 04:55:22 · 3 answers · asked by Jen 4

Ok, I need to solve this for Y. I can do the graphing part on my own I just need help with the Algebra problem.

Graph the quadratic equation after completing the given table of values. y = x^2 + 2

(Graph soled for x)
x
-2
-1
0
1
2

2007-10-07 04:51:40 · 3 answers · asked by trevor s 2

If p and q are two prime numbers and p>q?3 . Prove that the sum p+q is divisible by 12.

Thank you all

2007-10-07 04:38:33 · 1 answers · asked by thlee 2

Pseudocode:
Z ← 1
Get value for X
IF X is less than 4 THEN
Z ← 1
END IF
IF X is equal to 3 THEN
Z ← 2
END IF
PRINT Value of Z

What is output of above program if input is a) X is 3, b) X is 4, c) X is 2

2007-10-07 04:32:01 · 2 answers · asked by usman i 1